Answer:
3:10 30%
Step-by-step explanation:
6:20 is the same as 3:10
it is 3 / 10 or 30%
(take 6 / 20 and simplify)
Since after I saw that after three different 6 shaded portions left 2 squares i reliezed that it wasn't exactly 33%, so the closest would be 30%.
